Question

Find x. 4 ft 2.4 ft х x = ft

Answer 1

Answer:

x = 3.2 ft

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² + 2.4² = 4²

x² + 5.76 = 16 (  subtract 5.76 from both sides )

x² = 10.24 ( take the square root of both sides )

x = $\sqrt{10.24}$ = 3.2